Lab 3.2 Step 33: What is the default scheduler algorithm?

erisam

In lab 3.2 step 33 it is stated that the scheduler will try to deploy an equal number to both nodes by default.

When I did this step, I first got all 6 replicas running on my master node.

I then did $ kubectl scale deployment try1 --replicas=0 followed by $ kubectl scale deployment try1 --replicas=6 and found that all replicas were now running on my minion node (as verified with sudo docker ps | grep simple ).

On the next try to scale down/up, I got a 4/2 split on master/minion nodes.

From the info on https://kubernetes.io/docs/concepts/scheduling/kube-scheduler/ I see that there is some "default scheduling policies", what are these and how can I check them on my cluster?

chrispokorni

Hi @erisam,

The Kubernetes Scheduler repository on Github may be a good starting point to understand its main scheduling functions.

Regards,
-Chris